there's theories on griffins having their origin in protoceratops sceletons- on medieaval maps, they are drawn in, supposed to live near the altai mountain range. where there happen to be lots of protoceratops sceletons.
you know, bird-like- beak, some strange flat bones behind the head, four legs and a tail - half eagle, half- lion. the association is not that unlikely.
vampires were probably rabid, so were werewofls, (plus, hirsutism, of course).... and so on.
devilish possession is epilepsy, and there's reason to believe that the flood-stories which exist all over the world and are really, really old, might go back to the last ice-age, 8000 years BCE, and the subsequent rise of sea levels.
so, yes, dragons are pribably dinosaurs, but mythologically, they are snakes+fire. what could be worse?
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I can read facial expressions. I did the test.